Lock.



B. VAN HOE SEN.

LOCK.

APPLICATION FILED FEB.1], 19M.

Patented M33118; 1915.

CO" PHOTG-LITHQ. WASHINGmN, D. C.

THE NORRIS PETERS BENJAMIN VAN HonsEN, oF- LMEN, TEXAS;

LOCK.

Application filed February 17, 1914. Serial No. 819,242.

' To all whom it may concern:

outside without a'key, the latching means Be it known that "I, BENJAMIN VAN HOESEN, a citizen. of the United States, residing at Ulmer, inthe county of'Grimes and State of Texas,'have invented certain new and useful Improvements in Locks, of

which the following is a. specification.

This invention relates to new and useful improvements in locks, and has particular reference to that type of locks in which there is provided a slidable bolt and means 1 for so latching the bolt in its projected p sition that it cannot be operated from the being, however, movable out of engagement with the bolt so as topermit it to-be readily operated by means of an ordinary door handle.

-,The primary object of my invention is to improve, upon the construction illustrated and described in my prior Patent No. 1,052,105,=of February 4, 1913, by providing means operated from the interior of the door for dead-locking the bolt in its projected position, thus preventing any retraction of the. bolt, even by the use of. a

. key,from the outside of the door. r

' panying drawings, wherein Figure 1 is-a side elevation of a lock'con v structe'd in accordance with my invention,

the inside face-plate of the casing being removed; Fig. 2 is a like'rview to Fig. l but showing the dead-lock raisedandthe key in position to actuate'the tumbler. Fig. 3 is a section on the line 3-3 of'Fig. 1. Fig. 4 is a perspective detail view of the barrel,

the tumbler, the latch for the tumbler and wards. Fig. 5 is-,a perspectiveview of the key whereby the lock is actuated.

Corresponding and-like parts are referred to in 'the following description and indicated in all the views of the accompanying drawings by the samereferenee characters. Referring to these drawings, 2 designates the lock casing consisting of the two face plates 3 and ,4 and thesurrounding rim-5 later described. 9

i Specification of Letters Patent. Pate t d 1 91 an opening 7 through which the bolt 8 jects'. The bolt 8. may beof any'usual and desired form; and is mounted between guides 9 and 10, the forward end of-the bolt being:

guidedin theiopening. The belt. is, likewise guided upon a member 11" which forms f '7 the upper part of the'keyward, as 'willf b'e Rotatably mounted This barrel has alproj ecting arm M which projects into .a'slo't 15lformed infthe suppen fa'ce of the bolt. By rotating the barrel by means of the knob, the bolt .may. be retraot-m v in the side:plates 3 and ftfis a barrel 12 havingla polygonal, open ng 13 forthe passage of a knob-shank.

ed. against the'forc'e of a spring, '16 sup-ff ported in a slottedpost17. For the-purpose of holding projected position and preventing f its retra'ction'by meansof the barrel 12, 1 pro:

vide aftumbler 18 'which'is movable verti i i "cally toward andfrom, the bolt and; is sup-: ported between theside; plates 3 and 4: and" immediately in front of the 'membe'r'qlo.

the bolt at.

This tumbler has the form of a vertically.

sliding block providedat its endadjacent the bolt 8 .with a tooth 19 engaging in alrece'ss 20 formed'in' the under face of the bolt, 1 The. tumbler 18 has sliding engagement withthe rear face of the base of the Ward member 11 and is urged upward or into en- Y 'gagement with'the notch. of the recess20,

by means of a spring 22,, whose rear: end is supported in any suitable manner within, the

casing. In order to permit the sllding tum-f bler 18 tobegfo'rced downwardto release the side plate 4, upon theinside of the doon;v 2

bolt, I provide. thejtumbler' with a pin-24t' which .projects out througha slot 25in the In order to ,latchthe tumbler'lS outsofjthe bolt to be operated by a key, I provide posedat right angles to the tumbler 18 and engagement with the'boltfand thus'permit longitudinallyshifta'bleinto or outmf en: I gagement with thetu-mblen; This-latch is formed at oneend witha; tooth 27ywhich e'n-1 gages in a recess 28 formed in i the rear face of the tumble'n- .jThe latch-26 .is supportedv beneath the guide 10. and rests upon a, ,guide 23. A spring acts to forcethe latch toward j the. tumbler 18' so that when. the notch 28is brought into registry with the tooth; of the latchthe latch will snap mtoen-gageme'nt with the'tumblera The latch 26 isprovi'ded in both which i c ude the, en -p te 6 fo m dwith faces. with. th .oiitwaidlyproiiecting studs t. o

29 which extend out through slots 30 in the plates 3 and 4.

In order to provide means for preventing the door being unlocked even by means of a key, I provide within the casing 2, the vertically movable dead-lock 31 which has the form of a vertically slidable block disposed between guides 32 above the bolt, this block being formed with a tooth 33 adapted to engage in'a notch 34 formed in the upper face of the bolt. This dead-lock 31 is provided with a pin 35 which projects out through a slot on the inside face plate of the lock casing and can only be operated from the inside. When the bolt is projected and this sliding block or latch 31 is forced clownward into engagement with the bolt, it is obvious that the bolt cannot be retracted until the deadlock is raised. The frictional engagement between the guides 32 and the dead-lock31 is such that the dead-lock will be held in a raised position or held in its lowered position against accidental movement. In this connection it will of course be understood that I may interpose a leafspring between the dead-lock and one of the guide members 32, for creating the neces sary friction between the dead-lock and the other guide member, without departing in' anyway from the spirit of this invention.

For the purpose of permitting the key to be used for disengaging the tumbler 18 from the bolt, I provide the outer face-plate with an arcuate key-slot 36 which opens into a circular aperture within which is mounted the rotatable barrel 37. This barrel is slotted as at 38 to receive the bit of the key and the middle portion of the barrel is enlarged relatively to the end-portions thereof and is formed with a notch 39 adapted to be engaged at one point in the rotation of the barrel by the spring 40. This spring 40 is supported at one'end in any suitable manner and adjacent its free end being bent to form a tooth engageable with said notch. The purpose of this spring 40 is to hold the barrel so set that its slot 38 is coincident with the slot 36 to permit the ready rotation of the key, this spring, however, not preventing the ready rotation of the barrel by means of the key. Between the barrel 37 and the tumbler 18 there is provided a ward member 11, previously referred to. This consists of a block having a relatively wide basal portion, the upper portion of the block being slotted to provide the upwardly extending ward 41. The key 42 as shown in Fig. 5, is flat and at its extremity is formed with the curved bit 43 which is slotted as at 44 producing a pair of spaced arcuate tongs. This slot receives the ward 41 when the key is turned to the position shown in Fig. 2. The face of the tumbler 18 adjacent the ward member 11 is formed with outwardly projecting pins 45 adapted to be engaged by the bifurcated key-bit as the key is turned, as illustrated in Fig. 2. It will thus be seen that when a key of this character is inserted in the lock and then rotated, the ends of the bit tongs will engage the studs or pins 45 and a further rotation of the key will act to depress the tumbler 18 and carry the tooth 19 out of engagement with the notch 20, so as to permit the bolt to be shifted rearward by turning the knob.

The operation of my invention is as follows :Under normal circumstances and when the door is not locked, the tumbler 18 is held out of engagement with the bolt 8 by means of the latch 26 and in this condition a rotation of the knob-shank will cause a rotation of the barrel 12, and this in turn will retract the bolt against the force of the spring 15. When it is desired to latch the bolt, however, the latch 26 is pushed back ward so that the tooth 27 thereof escapes the notch 28 and the spring 22 then acts to force the tumbler upward and its tooth into engagement with the notch 20. The tumbler can only be retracted from the outside by-means of the key, previously described. When the key is turned in a clockwise direc tion the tumbler 18 is depressed, and when it reaches a proper position the spring 30 forces the latch 26 into engagement with the notch 28, after which the bolt may be retracted by means of the barrel 12. Upon the inside of the door, however, the bolt may be released from its engagement with the tumbler by depressing the tumbler through the pin 24, thus carrying the tumbler down until the tooth on the latch 26 engages in thenotch 28.

When it is desired to deadlatch the door from the inside to absolutely prevent the actuation of the tumbler by the key, the dead-lock 31 is shifted downward while the bolt is in its projected position and engages in the notch 34. Under these circumstances while the key can operate the tumbler, it will not release the bolt from'the dead-latch 31. The bolt 8 is made reversible so as to be of use on either side of the door. To that end I duplicated the notch 20 and the notch 34 so as to provide a notch 2O opposed to the notch 20 and a notch 34 opposed to the notch 34. It will also be noted that the upper end of the ward 41 extends into a slot 8 formed in the bolt 8, thus acting to guide the bolt and at the same time prevent any lateral deflection of the ward.

Having thus described the invention what is claimed as new is 1. In a lock of the character described, a casing including side-plates, a bolt within the casing, a tumbler engaging the bolt, a barrel rotatably mounted in the casing and having a longitudinally extending slit therein adapted toreeeive the shank of a key, the side wall of the casing being formed with a slot adapted to receive the bit of the key and to register with the slot in the barrel, and a spring having a'detent por tion engaging the barrel, the barrel being provided with a longitudinally extending notch engaged by said spring and so dis; posed that the spring yieldably holds the 7 barrel with its slot in registration with the slot in the side wall of the casing.

2. In a lock of the character described, a

' casing including side walls, one of the side into or out of engagement with the bolt to lock it in a projected position, a spring normally urging the tumbler into engagement with the bolt, a Ward disposed between said tumbler and the slot in the wall of the 'casing, a rotatable barrel having reduced ends mounted in the walls of the casing, said bar,- I

rel having a longitudinal slot adapted toregister' with the slot in said casing Wall, the barrel also beingprovided Witha longitudinally extending notch, and a resilient detent yieldably engaging said notch. I

3. In a lock of the character described, a

casing, a slidable'lock bolt having a longitudinally extending. recess formed in its under face, a vertically movable tumbler engageable with thebolt, and a wardmember' disposed in advance of the tumbler, the upper edge of the saidward member being disposed'intherecess of the bolt and constituting a guide.theref0r.

In testimony whereof I aflix'my signature, I

in presence of twowitnesses;

BENJAMIN v i: HOESEN. 1.. 8.1 I

Witnesses:

' C. W. WILLIAMS,

JAMES HARMAN.

Copies of this patent may be on'laaiined for five cents each,rby addressing the Commissioner of Patents;

Washington, G. i 

